import Vue from 'vue'
import VueRouter from 'vue-router'
import Login from '../components/Login.vue'
import Home from '../components/Home.vue'
import Welcome from '../components/Welcome.vue'
import Users from '../components/user/Users.vue'
import Rights from '../components/power/Rights.vue'
import Roles from '../components/power/Roles.vue'
import Cate from '../components/goods/Cate.vue'
import Params from '../components/goods/Params.vue'
import GoodsList from '../components/goods/List.vue'
import Add from '../components/goods/Add.vue'

Vue.use(VueRouter)

const router = new VueRouter({
  routes: [
    {
      path: '/',
      redirect: '/login'
    },
    {
      path: '/login',
      component: Login
    },
    {
      path: '/home',
      component: Home,
      redirect: '/welcome',
      children: [
        {
          path: '/welcome',
          component: Welcome
        },
        {
          path: '/users',
          component: Users
        },
        {
          path: '/rights',
          component: Rights
        },
        {
          path: '/roles',
          component: Roles
        },
        {
          path: '/categories',
          component: Cate
        },
        {
          path: '/params',
          component: Params
        },
        {
          path: '/goods',
          component: GoodsList
        },
        {
          path: '/goods/add',
          component: Add
        }
      ]
    }
  ]
})

// 挂载路由导航守卫
router.beforeEach((to, from, next) => {
  // 1 to 将要访问的路径
  // 2 from 代表从那个路径跳转而来
  // 3 next 是一个函数 表示放行
  // 4 next() 放行  next('/login') 强制跳转到login
  if (to.path === '/login') return next()
  // 获取 token
  const tokenStr = window.sessionStorage.getItem('token')
  // 判断是否有 token  没有 token 直接跳转到login 有 token 放行
  if (!tokenStr) return next('/login')
  next()
})

export default router
